Question

为什么在android中Menu不显示？？

package com.etc;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;

public class MenuActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

}
public boolean onCreateOptionsMenu(Menu menu){
MenuInflater inflater=getMenuInflater();
inflater.inflate(R.menu.menu, menu);

return true;

}
public boolean onOptionItem(MenuItem item){

int item_id=item.getItemId();
switch (item_id) {
case R.id.about:
Intent intent=new Intent();
intent.setClass(MenuActivity.this, Next.class);
startActivity(intent);

break;
case R.id.exit:
MenuActivity.this.finish();
break;

default:
break;
}
return true;
}
}

Answer 1

public boolean onCreateOptionsMenu(Menu menu){
super.onPrepareOptionsMenu(menu);
menu.clear();
MenuInflater inflater=getMenuInflater();
inflater.inflate(R.menu.menu, menu);
return true;
}

把onCreateOptionsMenu（）方法改成这样试试